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web列印去掉url地址

<script language="javascript" type="text/javascript">
        function UserPrint()
        {
          bdhtml=window.document.body.innerHtml; 
        
          var headstr = "<html><head></head><body>";
          var footstr = "</body>"; 
          var bodystr = document.all.item("printDiv").innerHTML;                     
          var oldstr = document.body.innerHTML; 
              
          document.body.innerHTML = headstr + bodystr + footstr;  
          pagesetup_null();     
          window.print();          
          pagesetup_default();
          document.body.innerHTML = oldstr;
          return false;   
        }               

        var hkey_root,hkey_path,hkey_key
        hkey_root="HKEY_CURRENT_USER"
        hkey_path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\"
        //設定網頁列印的頁首頁尾為空
        function pagesetup_null(){
            try{
                var RegWsh = new ActiveXObject("WScript.Shell")
                hkey_key="header"
                RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"")
                hkey_key="footer"
                RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"")
            }catch(e){}
        }
        //設定網頁列印的頁首頁尾為預設值
        function pagesetup_default(){
            try{
                var RegWsh = new ActiveXObject("WScript.Shell")
                hkey_key="header"
                RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"&w&b頁碼,&p/&P")
                hkey_key="footer"
                RegWsh.RegWrite(hkey_root+hkey_path+hkey_key,"&u&b&d")
            }catch(e){}
        }
    </script>